Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1998-03-03
1999-11-09
Graysay, Tamara L.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74606R, 152503, 277628, F16H 2140, B60S 124
Patent
active
059792540
ABSTRACT:
A motorized reduction gear unit having a crank and connecting rod mechanism incorporated in it, but especially for use as a vehicle screen wiper drive unit, comprises a hollow casing having a cover plate, with, within the hollow interior of the casing, a toothed wheel which is rotatable about an axis. The toothed wheel carries a gudgeon pin parallel to the axis of rotation of the toothed wheel but eccentric with respect to the latter. The pin drives a crank and connecting rod system in which the crank and connecting rod are articulated together about a pivot pin, so that continuous rotary motion of the toothed wheel is converted into alternating rotary motion of an output shaft. It further includes a peripheral gasket disposed between the upper edge of the casing and the cover plate, together with a friction plate element in the form of a thickened friction portion disposed fixedly on the inner surface of the cover plate facing towards the casing. The peripheral gasket and the friction plate element together constitute a monobloc component.
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Blanchet Pierre
Hommelet Stephane
Graysay Tamara L.
Joyce William C
Valeo Systems d'Essuyage
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